10:48 a.m.
Signed-off-by: Jan Tluka <jtluka(a)redhat.com>
---
docs/source/specific_scenarios.rst | 1 +
lnst/Recipes/ENRT/GreTunnelRecipe.py | 160 +++++++++++++++++++++++++++
lnst/Recipes/ENRT/__init__.py | 1 +
3 files changed, 162 insertions(+)
create mode 100644 lnst/Recipes/ENRT/GreTunnelRecipe.py
diff --git a/docs/source/specific_scenarios.rst b/docs/source/specific_scenarios.rst
index ee703138..fb0b4eee 100644
--- a/docs/source/specific_scenarios.rst
+++ b/docs/source/specific_scenarios.rst
@@ -7,3 +7,4 @@ Specific ENRT scenarios
team_recipe
vlans_recipe
vlans_over_bond_recipe
+ gre_tunnel_recipe
diff --git a/lnst/Recipes/ENRT/GreTunnelRecipe.py b/lnst/Recipes/ENRT/GreTunnelRecipe.py
new file mode 100644
index 00000000..dee2f63f
--- /dev/null
+++ b/lnst/Recipes/ENRT/GreTunnelRecipe.py
@@ -0,0 +1,160 @@
+from lnst.Controller import HostReq, DeviceReq, RecipeParam
+from lnst.Common.IpAddress import (
+ AF_INET,
+ AF_INET6,
+ ipaddress,
+ Ip4Address,
+ Ip6Address,
+)
+from lnst.Devices import GreDevice
+from lnst.RecipeCommon.Ping.PingEndpoints import PingEndpoints
+from lnst.RecipeCommon.PacketAssert import PacketAssertConf
+from lnst.Recipes.ENRT.BaseTunnelRecipe import BaseTunnelRecipe
+
+
+class GreTunnelRecipe(BaseTunnelRecipe):
+ # TODO: docstring
+ """
+ This class implements a recipe that configures a simple GRE tunnel between
+ two hosts.
+
+ .. code-block:: none
+
+ .--------.
+ .------| switch |-----.
+ | '--------' |
+ | |
+ .-------|------. .-------|------.
+ | .--'-. | | .--'-. |
+ | |eth0| | | |eth0| |
+ | '----' | | '----' |
+ | | | | | | | |
+ | ----' '--- | | ----' '--- |
+ | gre tunnel | | gre tunnel |
+ | ---------- | | ---------- |
+ | | | |
+ | host1 | | host2 |
+ '--------------' '--------------'
+
+ The actual test machinery is implemented in the :any:`BaseEnrtRecipe` class.
+
+ The test wide configuration is implemented in the :any:`BaseTunnelRecipe`
+ class.
+ """
+
+ host1 = HostReq()
+ host1.eth0 = DeviceReq(label="net1",
driver=RecipeParam("driver"))
+
+ host2 = HostReq()
+ host2.eth0 = DeviceReq(label="net1",
driver=RecipeParam("driver"))
+
+ def configure_underlying_network(self, configuration):
+ """
+ The underlying network for the tunnel consists of the Ethernet
+ devices on the matched hosts.
+ """
+ host1, host2 = self.matched.host1, self.matched.host2
+ for i, device in enumerate([host1.eth0, host2.eth0]):
+ device.ip_add(ipaddress("192.168.101." + str(i + 1) +
"/24"))
+ device.up()
+ configuration.test_wide_devices.append(device)
+
+ return (host1.eth0, host2.eth0)
+
+ def create_tunnel(self, configuration, endpoints):
+ """
+ The GRE tunnel devices are configured with IPv4 and IPv6 addresses
+ of individual networks. Routes are configured accordingly.
+ """
+ endpoint1, endpoint2 = endpoints
+ m1 = endpoint1.netns
+ m2 = endpoint2.netns
+ ip_filter = {"family": AF_INET}
+ endpoint1_ip = endpoint1.ips_filter(**ip_filter)[0]
+ endpoint2_ip = endpoint2.ips_filter(**ip_filter)[0]
+
+ a_ip4 = Ip4Address("192.168.6.2/24")
+ a_net4 = "192.168.6.0/24"
+ b_ip4 = Ip4Address("192.168.7.2/24")
+ b_net4 = "192.168.7.0/24"
+
+ a_ip6 = Ip6Address("6001:db8:ac10:fe01::2/64")
+ a_net6 = "6001:db8:ac10:fe01::0/64"
+ b_ip6 = Ip6Address("7001:db8:ac10:fe01::2/64")
+ b_net6 = "7001:db8:ac10:fe01::0/64"
+
+ m1.gre_tunnel = GreDevice(local=endpoint1_ip, remote=endpoint2_ip)
+ m2.gre_tunnel = GreDevice(local=endpoint2_ip, remote=endpoint1_ip)
+
+ # A
+ m1.gre_tunnel.up()
+ m1.gre_tunnel.ip_add(a_ip4)
+ m1.gre_tunnel.ip_add(a_ip6)
+ m1.run("ip -4 route add {} dev {}".format(b_net4, m1.gre_tunnel.name))
+ m1.run("ip -6 route add {} dev {}".format(b_net6, m1.gre_tunnel.name))
+
+ # B
+ m2.gre_tunnel.up()
+ m2.gre_tunnel.ip_add(b_ip4)
+ m2.gre_tunnel.ip_add(b_ip6)
+ m2.run("ip -4 route add {} dev {}".format(a_net4, m2.gre_tunnel.name))
+ m2.run("ip -6 route add {} dev {}".format(a_net6, m2.gre_tunnel.name))
+
+ configuration.tunnel_devices.extend([m1.gre_tunnel, m2.gre_tunnel])
+
+ def generate_ping_endpoints(self, config):
+ """
+ The ping endpoints for this recipe are simply the tunnel endpoints
+
+ Returned as::
+
+ [PingEndpoints(self.matched.host1.gre_tunnel,
self.matched.host2.gre_tunnel)]
+ """
+ return [
+ PingEndpoints(self.matched.host1.gre_tunnel, self.matched.host2.gre_tunnel)
+ ]
+
+ def get_packet_assert_config(self, ping_config):
+ """
+ The packet assert test configuration contains filter for gre protocol
+ and grep patterns to match the ICMP or ICMP6 echo requests.
+ """
+ ip_filter = {"family": AF_INET}
+ m1_carrier = self.matched.host1.eth0
+ m2_carrier = self.matched.host2.eth0
+ m1_carrier_ip = m1_carrier.ips_filter(**ip_filter)[0]
+ m2_carrier_ip = m2_carrier.ips_filter(**ip_filter)[0]
+
+ ip1 = ping_config.client_bind
+ ip2 = ping_config.destination_address
+
+ pa_kwargs = {}
+ pa_kwargs["p_filter"] = "proto gre"
+
+ if isinstance(ip2, Ip4Address):
+ pat1 = "{} > {}: GREv0, .* IP {} > {}: ICMP echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ pat2 = "{} > {}: GREv0 \| {} > {}: ICMP echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ grep_pattern = ["({})|({})".format(pat1, pat2)]
+ elif isinstance(ip2, Ip6Address):
+ pat1 = "{} > {}: GREv0, .* IP6 {} > {}: ICMP6, echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ pat2 = "{} > {}: GREv0 \| {} > {}: ICMP6, echo
request".format(
+ m1_carrier_ip, m2_carrier_ip, ip1, ip2
+ )
+ grep_pattern = ["({})|({})".format(pat1, pat2)]
+ else:
+ raise Exception("The destination address is nor IPv4 or IPv6
address")
+
+ pa_kwargs["grep_for"] = grep_pattern
+
+ if ping_config.count:
+ pa_kwargs["p_min"] = ping_config.count
+ m2 = ping_config.destination
+ pa_config = PacketAssertConf(m2, m2_carrier, **pa_kwargs)
+
+ return pa_config
diff --git a/lnst/Recipes/ENRT/__init__.py b/lnst/Recipes/ENRT/__init__.py
index f08c6375..4d057a8d 100644
--- a/lnst/Recipes/ENRT/__init__.py
+++ b/lnst/Recipes/ENRT/__init__.py
@@ -80,6 +80,7 @@ from lnst.Recipes.ENRT.VlansOverTeamRecipe import VlansOverTeamRecipe
from lnst.Recipes.ENRT.VlansRecipe import VlansRecipe
from lnst.Recipes.ENRT.VxlanMulticastRecipe import VxlanMulticastRecipe
from lnst.Recipes.ENRT.VxlanRemoteRecipe import VxlanRemoteRecipe
+from lnst.Recipes.ENRT.GreTunnelRecipe import GreTunnelRecipe
from lnst.Recipes.ENRT.BaseEnrtRecipe import BaseEnrtRecipe
from lnst.Recipes.ENRT.BaseTunnelRecipe import BaseTunnelRecipe
--
2.26.3